Prayer.

The idea of prayer is really nice, I think. Even if the prayers are for someone who doesn't have faith in whatever power the prayer is directed at. It's just a nice idea.

These people believe in an all-powerful, all-knowing being, who knows what is to happen, and probably, if not definitely, engineered the situation that warrants prayer: God gave you the cancer, God crashed the stock market, etc. God might be in the rain, but he's also in the monsoon, in the tsunami, in the hurricane.

These people have the sheer audacity to think they can change this being's mind. Do they think they know better than God's plan? Can they see the infinity of time stretching out before them in all directions? No. But God can, and they think they know what's best for the world.

So they ask him to change his mind, despite his omnipotence.

Isn't that nice?